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A Test Method to Establish R‐Values of Materials Used in Energy Conserving Window Coverings
Author(s) -
Rymer Jeanne S.
Publication year - 1985
Publication title -
journal of interior design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.229
H-Index - 13
eISSN - 1939-1668
pISSN - 1071-7641
DOI - 10.1111/j.1939-1668.1985.tb00021.x
Subject(s) - window (computing) , measure (data warehouse) , reliability (semiconductor) , computer science , test method , energy (signal processing) , value (mathematics) , reliability engineering , mechanical engineering , process engineering , mathematics , engineering , statistics , data mining , physics , power (physics) , quantum mechanics , operating system , machine learning
A reliable test method was designed to measure the insulation value (R‐value) of materials that might be used in the construction of interior window treatments used to restrict the transfer of heat. This method provides an accurate measure of just one factor by which such window coverings can be judged: heat conduction. The test method is similar to the standard test method ASTM D: 1518‐77, “Thermal Transmit‐tance of Textile Materials Between Guarded Hot‐Plate and Cool Atmosphere,” but provides more specifically appropriate apparatus and procedure calculation methods for interior window materials. After reliability of the procedure was established, 32 samples in six categories were tested. These represented a sampling of typical drapery and lining fabrics, window blind materials, battings, products currently marketed as “energy saving,” and other materials which are not presently used as components of window coverings. This approach of establishing and using an R‐value as the only measurement of effectiveness of an energy efficient window treatment can provide a standardized, easily established, quoted, and understood industry and consumer tool for the selection of effective treatments. Presently there is no industry‐wide acceptance of a single test method for technical and consumer use.